Therefore, DB2 as a proven relational engine with a cutting-edge optimizer is insufficiently exploited.

因此，虽然已经证明DB 2是带有最前沿优化器的关系引擎，但它并没有得到充分利用。

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Now, DB2 has introduced an optimized data storage engine for XML data alongside the existing relational engine.

现在，DB 2引入了优化的数据存储引擎，以便与现有关系引擎一起支持XML数据。

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Now, DB2 has introduced an optimized data storage engine for XML data alongside its existing relational engine.

现在，DB2在它已有的关系引擎的基础上，更是引入了一种用于XML数据优化的数据存储引擎。

youdao